Monitoring Moisture Content for Various Kind of Tea Leaves in Drying Processes Using RF Reflectometer-Sensor System
| Autor: | Kok San Chan, Ee Meng Cheng, Kok Yeow You, Yeng Seng Lee, Kim Yee Lee, Chia Yew Lee |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
microcontroller-based RF reflectometer
Materials science 02 engineering and technology large open-ended coaxial probe 01 natural sciences Coaxial probe tea leaves Data acquisition 0202 electrical engineering electronic engineering information engineering lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Reflectometry Instrumentation Water content reflected voltage moisture content Remote sensing Sensor system Moisture 010401 analytical chemistry 020206 networking & telecommunications Ranging Monitoring system lcsh:QC1-999 0104 chemical sciences electrical_electronic_engineering lcsh:QC770-798 lcsh:Physics |
| Zdroj: | Instruments, Vol 2, Iss 3, p 18 (2018) |
| Popis: | This paper presents tea leaves moisture monitoring system based on RF reflectometry techniques. The system was divided into two parts which are the sensor and reflectometer parts. The large coaxial probe was used as a sensor of the system. The reflectometer part plays a role as signal generator and also data acquisition. The reflectometer-sensor system was operated with a graphical user interface at 1.529 GHz at room temperature. The system was able to measure the moisture content of tea leaves ranging 0% m.c to 50% m.c on a wet basis. In this study, up to five kinds of tea leaves bulk were tested. The mean of absolute errors in the moisture measurement for tea leaves was ±2. |
| Databáze: | OpenAIRE |
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